*, *::before, *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    margin: 0;
    overflow-x: hidden;
  }

  ::selection {
    background: #0d9488;
    color: #f0fdfa;
  }

  /* NAV */
  #site-header {
    background: transparent;
  }

  #site-header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
  }

  #site-header.scrolled .nav-title {
    color: #0f172a;
  }

  #site-header.scrolled .menu-line {
    background: #0f172a;
  }

  /* HERO ANIMATIONS */
  .hero-sub {
    opacity: 0;
    transform: translateY(20px);
    animation: heroFadeUp 0.8s ease forwards 0.3s;
  }

  .hero-headline {
    opacity: 0;
    transform: translateY(30px);
    animation: heroFadeUp 0.8s ease forwards 0.5s;
  }

  .hero-body {
    opacity: 0;
    transform: translateY(20px);
    animation: heroFadeUp 0.8s ease forwards 0.7s;
  }

  .hero-headline + p + div {
    opacity: 0;
    transform: translateY(20px);
    animation: heroFadeUp 0.8s ease forwards 0.9s;
  }

  @keyframes heroFadeUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* REVEAL ANIMATIONS */
  .reveal-up,
  .reveal-left,
  .reveal-right {
    opacity: 1;
    transform: none;
  }

  @media (prefers-reduced-motion: no-preference) {
    .reveal-up {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal-left {
      opacity: 0;
      transform: translateX(-32px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal-right {
      opacity: 0;
      transform: translateX(32px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal-up.revealed,
    .reveal-left.revealed,
    .reveal-right.revealed {
      opacity: 1;
      transform: translate(0, 0);
    }
  }

  /* MOBILE MENU */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: all;
  }

  #mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
  }

  .mobile-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease, transform 0.4s ease;
  }

  #mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
  }

  #mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
  #mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
  #mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
  #mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
  #mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

  /* HAMBURGER */
  #menu-toggle.open .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
  }

  #menu-toggle.open .menu-line:nth-child(2) {
    opacity: 0;
  }

  #menu-toggle.open .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 24px;
  }

  /* FOCUS */
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
  }

  /* SCROLLBAR */
  ::-webkit-scrollbar {
    width: 6px;
  }

  ::-webkit-scrollbar-track {
    background: #f8fafc;
  }

  ::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #64748b;
  }

  /* FORM */
  input:focus,
  textarea:focus {
    border-color: #0d9488 !important;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.08);
  }